*{
    margin: 0;
    padding: 0;
}
body{
    background: #ffffff;
}
.head{
    border-radius: 0px 4px 4px 0px;
    background: #f7f7f7;
    height: 80px;
    display: flex;
    overflow: hidden;
}
.head>.con{
    display: flex;
    justify-content: space-between;
    width: 80%;
    margin: 0 auto;
    font-size: 26px;
    height: 100%;
    line-height: 80px;
}
#frame{
    position: fixed;
    top: 80px;
    width: 100%;
    height: 100%;
}